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Biolumin Blue
Graphite Gray
Biolumin Blue
Biolumin Blue
Biolumin Blue
Graphite Gray
Graphite Gray
Graphite Gray
4.8
Rated 4.8 out of 5 stars
256 Reviews

Swamp Cooler™ Harness

Cooling harness with handle

Three-point leash attachment cooling harness with a lift-and-assist handle

Color

Selected: Biolumin Blue

Choose size

Sizing Chart

Use this fit guide to find the right size for your dog. Measurement is around the widest part of the rib cage. In between sizes? Choose the smaller size.

Girth Size
13 - 17 in (33 - 43 cm) XXS
17 - 22 in (43 - 56 cm) XS
22 - 27 in (56 - 69 cm) S
27 - 32 in (69 - 81 cm) M
32 - 42 in (81 - 107 cm) L/XL
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Trail Tested Promise
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The Swamp Cooler™ Harness is a trail-ready, all-in-one cooling solution for dogs exploring in hot conditions, now with a third leash attachment point on the chest. Integrated directly into our three-strap harness platform, it leverages our Swamp Cooler™ technology to pull body surface heat away through evaporative cooling. Dial in a secure and comfortable fit with six adjustment points, lift and assist with the quick-grab handle, and stay connected with three leash connection points as you head out together on your next summer endeavor. 

How does Swamp Cooler™ Tech work? Learn more here about how that refreshing, just-stepped-out-of-a-lake feeling known as evaporative cooling helps keep your dog cool. Check out the Swamp Cooler™ Collection.

Three-Layer Construction

Wicking outer layer: reflects heat, facilitates evaporation to disperse heat, and offers UPF 50+. Absorbent middle layer: stores water for evaporation. Mesh lining: keeps dog dry and comfortable.

Padded Handle

Balanced and comfortable lifting with padded handle and load-dispersing chest/belly panel

Three Leash Attachment Points

Aluminum V-ring, reinforced webbing loop on the back, and reinforced webbing loop on the chest for redirecting dogs that pull on leash

Additional Features

  • Six points of adjustment for an optimal fit
  • Reflective trim and light loop for attaching The Beacon™
  • Side-release buckles for easy on/off

  • Materials

    • Outer Layer: Polyester air mesh (bluesign® approved)
    • Middle Layer: Polyester non-woven felt
    • Lining: Dry-weave polyester mesh (bluesign® approved)
    • Webbing: Polypropylene webbing
    • Buckles: ITW Nexus Mach buckles
    • Leash Connection Point: Anodized 6061-T6 aluminum V-ring
    • Made in Vietnam

  • Care

    • Secure fasteners
    • Wash in cold water
    • Gentle cycle
    • Use mild detergent
    • Air dry
chart
Select Size

13-17 in (33-43 cm)

Ratings & Reviews

4.8
Rated 4.8 out of 5 stars
Based on 256 reviews
Slide 1 selected
256 reviews
  • Megan H.
    Verified Buyer
    I recommend this product
    Type of Activity Running, Hiking, Camping, Biking, Backpacking
    Dog Size Medium
    Rated 5 out of 5 stars
    3 minutes ago
    Made a Noticeable Difference for Our 13-Year-Old Girl!

    We absolutely love this harness! Our girl Jenny just turned 13 and has a dark coat, so I've noticed she's becoming more sensitive to the sun on walks and hikes as she's gotten older. She still gets around incredibly well and wasn't necessarily struggling before, but the difference in her comfort and happiness while wearing this harness has been really noticeable!

    We even took her on a hike in Lake Tahoe for her 13th birthday this summer, and she did seven miles at 8,000 feet like it was nothing! I really think this harness helped make that possible.

    She's about 40 pounds and built a bit like a large beagle, and the medium fits her perfectly. I also love how adjustable everything is. It does need to be re-wetted periodically in really hot conditions, but it stays effective for quite a while.

    I couldn't recommend it more, especially for older dogs or dogs with dark coats who still love getting outside!

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  • Tony C.
    Verified Buyer
    I recommend this product
    Type of Activity Running, Hiking, Other
    Dog Shape Deep chested
    Dog Size Large
    Rated 5 out of 5 stars
    1 month ago
    Swamp cooler harness review. Didn't no what u meant here?

    This is my second purchase of this harness. Last one I bought in June of 2025. Have had at least a half dozen different ones before your harness. The best one I've ever purchased! Strong and tough, especially when it's strapped to a land shark. ( Belgian Malinois). The last one just started to fray along the main buckle and a little on the handle. Still, over 1200 miles on that harness, with some serious tugging! Awesome...

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  • jenni h.
    Verified Buyer
    I recommend this product
    Type of Activity Hiking
    Dog Size Medium
    Rated 5 out of 5 stars
    2 months ago
    Great Vest

    It has been an exceptionally hot summer in eastern Idaho. My black dog was a little confused when we put this on her, but she went from panting in the shade to comfortable and was far more active in the heat!

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  • Corinne
    I recommend this product
    Rated 5 out of 5 stars
    2 months ago
    5 Stars

    Tout parfait le harnais au top juste un peu grand mais malgré bien mesuré il est top malgré tout et la livraison super rapide,vraiment super sites.

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  • Emmanuel F.
    Verified Buyer
    I recommend this product
    Type of Activity Hiking, Camping, Backpacking, Water
    Dog Shape Robust
    Dog Size Medium
    Rated 5 out of 5 stars
    2 months ago
    Pleasantly Surprised

    This was my first time purchasing an item like this for my Australian Cattle Dog and we have been hiking a lot lately. It was a warm day and I checked the temperature under the harness and it was quite cool! My dog Luna also seemed very happy to have it on.

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